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No place for particles in relativistic quantum theories?
localizable particles relativity and quantum theory
2008/4/22
Several recent arguments purport to show that there can be no relativistic, quantum-mechanical theory of localizable particles and, thus, that relativity and quantum mechanics can be reconciled only i...
First-Order Logic Foundation of Relativity Theories
general relativity gravitational time dilation
2008/4/22
Motivation and perspective for an exciting new research direction interconnecting logic, spacetime theory, relativity--including such revolutionary areas as black hole physics, relativistic computers,...
On the Inherent Incompleteness of Scientific Theories
Scientific Theories Inherent Incompleteness
2008/4/22
We examine the question of whether scientific theories can ever be complete. For two closely related reasons, we will argue that they cannot. The first reason is the inability to determine what are "v...
Non-Empirical Requirements Scientific Theories Must Satisfy: Simplicity, Unification, Explanation, Beauty
Simplicity Unification Eplanation ymmetry
2008/4/22
A scientific theory, in order to be accepted as a part of theoretical scientific knowledge, must satisfy both empirical and non-empirical requirements, the latter having to do with simplicity, unity, ...
Non-Representationalist Theories of Knowledge and Quantum Mechanics
Quantum Mechanics Non-Representationalist Theories
2008/4/22
Quantum Mechanics has imposed strain on traditional (dualist and representationalist) epistemological conceptions. An alternative was offered by Bohr and Heisenberg, according to whom natural science ...
For a long time, regularity accounts of causation have virtually vanished from the scene. Problems encountered within other theoretical frameworks have recently induced authors working on causation, l...
Scientific Theories, Models, and the Semantic Approach
semantic view Skolem's paradox modal interpretation
2008/4/22
According to the semantic view, a theory is characterized by a class of models. In this paper, we examine critically some of the assumptions that underlie this approach. First, we recall that models a...
The Problem of Ontology for Spontaneous Collapse Theories
spontaneous localization theories dynamical reduction theories
2008/4/21
The question of how to interpret spontaneous collapse theories of quantum mechanics is an open one. One issue involves what link one should use to go from wave function talk to talk of ordinary macros...
The representation of facts in physical theories
Breaking of the time-reversal symmetry Nonanticipative behavior
2008/4/21
The purpose of this contribution is to call attention to a problem which has not received the interest which, in my opinion, it deserves: the problem of representation of facts in physical theories. T...
The Role of Causal Processes in the Neutral and Nearly Neutral Theories
neutral theory of molecular evolution nearly neutral theory of molecular evolution
2008/4/21
In this paper, we will consider how the neutral and nearly neutral theories of molecular evolution differ from each other as a means for addressing causal processes associated with random drift and na...
In “The Toolbox of Science” (1995) together with Towfic Shomar we advocated a form of instrumentalism about scientific theories. We separately developed this view further in a number of subsequent wor...
This paper is a survey of the theories of time travel in a perspective close to theories of time. In the last section we discuss the special ontology of the objects that exist on closed timelike curve...
Why were two theories (Matrix Mechanics and Wave Mechanics) deemed logically distinct, and yet equivalent, in Quantum Mechanics?
Quantum Mechanics Matrix Mechanics
2008/4/15
A recent rethinking of the early history of Quantum Mechanics deemed the late 1920s agreement on the equivalence of Matrix Mechanics and Wave Mechanics, prompted by Schrödinger’s 1926 proof, a my...
The elucidation of the gauge principle ``is the most pressing problem in current philosophy of physics" Redhead. This paper argues two points that contribute to this elucidation in the context of Yang...
Matrix models as non-local hidden variables theories
hidden variables theory quantum gravity
2008/4/15
It is shown that the matrix models which give non-perturbative definitions of string and
M theory may be interpreted as non-local hidden variables theories in which the quantum
observables are the e...